Too many armchair critics around! The Lancaster Skies director (Callum Burn) is in his twenties and managed to scrape up a budget of just £80k for his debut movie. He is passionate about recognising and supporting the Bomber Command aircrews.
I agree that there may be a few mistakes with cap badges and saluting procedures, but who really cares. I defy anyone to make a better WW2 movie on such a tiny budget. He needs to be encouraged rather than criticised.